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Three new bis-trinorcadalenes, bistrinorcadintermes A–C (1-3) along with seven known compounds, parvifloral D (4), parvifloral E (5), parvifloral C (6), hymexelsin (7), scopoletin (8), scopolin (9), and hibiscolactone A (10) were isolated from the aerial parts and radix of Decaschistia intermedia Craib. Their chemical structures were determined based on spectroscopic methods, including 1D, 2D NMR, MS, and experimental CD spectra. All compounds were evaluated for their α-glucosidase inhibitory effects. Compounds 1, 5, and 8 showed moderate α-glucosidase inhibitory activities with IC50 values of 45.6 ± 4.2, 43.7 ± 3.6, and 43.7 ± 3.6 μg/mL, respectively. Compounds 2-4 and 10 showed weak α-glucosidase inhibitory activities with IC50 values ranging from 87.5 ± 6.3 to 219.8 ± 4.9 μg/mL.

Two new cadinane sesquiterpenes, cadinoschanes A and B (1 and 2), one new norlignan, lignanoschane A (6) along with seven known compounds, hibiscone B (3), 7β-O-β-glucopyranosyl bombaxone (4), 2,7β,8β-trihydroxy trans-calamenene 7-O-β-D-glucopyranoside (5), clemastanin A (7), (−)-3,4,3′,4′-tetrahydroxy-9,7′β-epoxylignano-7β,9′-lactone (8), N-trans-feruloyl tyramine (9), and methyl (3R)-3-[(3R)-3-{(3R)-3-hydroxybutanoyloxy} butanoyloxy} butanoate (10) were isolated from Abelmoschus moschatus subsp. tuberosus (Span.) Borss. Waalk. Their structures were determined on the basis of extensive spectroscopic methods, including 1D, 2D NMR and MS data and comparing experimental CD with theoretical CD calculations. Compounds 3 and 9 showed significant α-glucosidase inhibitory activity with IC50 values of 121.7 ± 3.9 and 4.3 ± 0.5 μg/mL, respectively, compared to those of a positive control, acarbose with IC50 value of 183.5 ± 12.2 μg/mL.

Nanotechnology is the key technology that brings many important applications in biomedical research.Nanolantanites present high stability, easy fabrication and functionalization. Tb3+ ion-containing nanomaterial, a specific type of nanolantanites, possess great prospects. In addition, cancer stem cells (CSCs) are directlyrelated to drug resistance, metastasis, recurrent cancer, etc. Therefore, CSCs are considered as the target forcancer researching and for discovery of more effective therapies. CD133, a trans-membrane glycoprotein, isone of the typical markers that are found to appear very commonly on the surface of many types of CSCs. Inthis study, CD133 monoclonal antibody (MAb) was cojugated with nanomaterials containing Tb3+. Thecoupling between fluorescented nanomaterials containing Tb3+ ions and CD133 MAb was then incubated withhuman colon cancer cells (HT-29) to evaluate its ability to label CSCs in vitro. The results showed thatnanorods containing rare-earth based Tb3+ ions which were fabricated by hydrothermal method, present thelength of about 300 - 800 nm and the diameter in range of 40 - 50 nm. The Tb3+ nanoparticals also havehexagonal structure of terbium phosphate monohydrate and green illuminant. Tb3+ nanorods were also furthersurface silica coated and amino-silane functionalized. This nanostructure was successfully combined withmonoclonal antibodies against CD133 which labelled the surface marker of HT-29 human colon cancer cells.As a result, the combination of CD133+TbPO4@Silica-NH2 (functionalized surface) showed strongerluminescence than the CD133+TbPO4 unfunctionalized combination.

As reported, cancer stem cells (CSCs) are in charge of dangerous characteristics including drug resistance, metastasis, recurrence and therapeutic effectiveness. Therefore, CSCs are an important target for discovering of novel effective and specific anticancer drugs. In Vietnam, the Stichopus chloronotus sea cucumber is found as a potential biological source with various active ingredients. Particularly, the active triterpene saponin stichoposide D, which was isolated from S. chloronotus, showed strong cytotoxic activity in leukemias. Herein, stichoposide D was further studied its potential anti-CSCs activities on pluripotent human embryonic carcinomas NTERA-2 cells. The compound exhibited its promising and specific cytotoxic activities in NTERA-2 cells with the IC50 = 0.26 ± 0.02 µM, in comparison with that ranging from 0.35 ± 0.02 µM to 0.53 ± 0.03 µM (P

Recent studies have revealed that cancer stem cells (CSCs) drive tumor growth, metastasis, therapy resistant and recurrence. Therefore, CSCs are considered as new targets for screening of more effective drugs. The compound malloapelta B, which was isolated from the Bum-bup plant (Mallotus apelta) (Lour.) Muel.-Arg, Euphorbiaceae) in Vietnam, presented very potent and strong anticancer invitro, especially against the activation ofNF-kB (nuclear factor- kappa B). In our research, malloapelta B inhibited the growth of NTERA-2 line, a CSC line, at the value of IC50 = 12.71 ± 0.76 µM. In this study, malloapelta B also had effects on cell cycle of NTERA-2 by significantly reducing the cell number at G0/G1 phase (37.48%), while raising this number of phase G2/M to 31.12% in comparison with those of control (56.81% and 18.6%, respectively). Besides, clonogenic and tumorspheroidal formations are acknowledged as typically renewable characteristics of CSCs. Then, in our studies, malloapelta B significantly prevented NTERA-2 to form clonogens and reduced tumorspheres’ sizes at treatments with 20 and 100 µg/mL. However, malloapelta B did not exhibit any obvious effects on the expression level of CD44+/CD24+, the two typical cell surface markers of CSCs, at 2.5 and 5 µM treatments.

Three sesquiterpene lactones (1–3) were isolated from the aerial part of Tithonia diversifolia (Hemsl.) A. Gray grown in the Hoa Binh province in Viet Nam. The structures of these three sesquiterpene lactones were identified as tagitinin A (1), 1β-hydroxytirotundin 3-O-methyl ether (2), and tagitinin C (3) by analyzing spectroscopic data. For the first time, compound 2 was isolated from T. diversifolia growing in Viet Nam. Furthermore, contrary to existing literature, we determined that compound 1 was the major isolate. Compounds 1 and 3 significantly decreased numbers of acute myeloid leukemia OCI-AML3 cells by promoting apoptosis and causing cell cycle arrest at G0/G1 phase at concentrations as low as 2.5 μg/mL (compound 1) and 0.25 μg/mL (compound 3). Additionally, all three compounds showed cytotoxic activity against five human cancer cell lines (A549, T24, Huh-7, 8505, and SNU-1), with IC50 values ranging from 1.32 ± 0.14 to 46.34 ± 2.74 μM. Overall, our findings suggest that compounds 1 and 3 may be potential anti-cancer therapeutics and thus warrant further study.

Using various chromatographic separations, two new cembranoids, ehrenbergols F and G (

Gd2O3: Yb3+, Er3+ monodisperse nanospheres with strong red color upconversion luminescence (UCL) and high re-dispersibility fabricated by synergistic chemical method, in presence of urea, adding polyol and followed by a subsequently step by step calcination are demonstrated. While the urea/RE ratio from 10/1 to 50/1 and the content change of polyethylene glycol varied, the size of GdOHCO3·H2O: Yb3+, Er3+ precursors increased from 200 nm to above 400 nm and remained the low standard deviation. The thermal convertion of GdOHCO3: Yb3+, Er3+ into Gd2O3: Yb3+, Er3+ by the multistep calcination between 650 and 1200 °C has accomplished to achieve the perfect spherical shape. The size of the resultant Gd2O3: Yb3+, Er3+ nanospheres has changed and controlled from 150 to 350 nm. It was found that the addition of polyethylene glycol (PEG) uprised consideringly the size, which further homogenized the shape as well as enhanced the re-dispersability and suspension stability of Gd2O3: Yb3+, Er3+ nanospheres. Gd2O3: Yb3+, Er3+ monospheres with high activator concentration show the strong UCL with extremely sharp strong peaks and possess intense red color emission. The UCL intensity was enhanced drastically when the calcination temperature increased from 650 to 1200 °C. The UCL properties of Gd2O3: 18%Yb3+, 2%Er3+ and Gd2O3: 7.5%Yb3+, 1.5%Er3+ as the typical nanophosphors have been studied to understand more the UCL process. Based on these advanced features, Gd2O3: Yb3+, Er3+ UCL nanospheres will open promising platform for application in biomedicine as well as toward to developing a single spherical particle nanosensor.

In this paper, we will describe the selection of variables, model, and determinants of economic performance in Vietnam. The presence of FDI has created competitive pressures on domestic enterprises. This study uses panel data for Vietnamese enterprises in the industry from 2000 to 2018, which quantifies the impact of FDI on the industry leaving domestic enterprises. The results show that in addition to factors such as import and export status, industry concentration, income, age of enterprise, and number labor in enterprise, the emergence of FDI in the same industry increases the ability of domestic firms’ exit.

A phytochemical investigation of methanol extract from leaves of Pachyrhizus erosus (L.) Urban, a leguminous shrub distributed in Vietnam and other tropical and subtropical countries led to the isolation of a new prenylated chalcone, erosusone (1) and a new megastigmane glycoside epimer, 3-episedumoside F

Sixteen compounds (

Fluorescence imaging is an important technique used for early diagnosis and effective treatment of some incurable diseases including cancer. Herein, we report novel NaYF

Upconversion nanophosphors are new promising nanomaterials to be used as biolabels for detection and imaging of cancer cells. These nanophosphors absorb long-wavelength excitation radiation in the infrared or near infrared region and emit shorter wavelength, higher energy radiation from ultraviolet to infrared. In this paper, we studied the hydrothermal method and optical properties of the functionalized NaYF4:Yb3+,Er3+ for biomedical application. After synthesis, these NaYF4:Yb3+,Er3+ nanophosphors were functionalized with aminosilanes and folic acid. Folic acid binds to the folate receptor on the surface of MCF-7 breast cancer cells and this binding promotes internalization of the nanophosphors via endocytosis. The sizes of the functionalized NaYF4:Yb3+,Er3+@silica-N=FA (folic acid) nanophosphors can be controlled with length of the rod about 300–800 nm and diameter of the rod about 100–200 nm. Phase structure of NaYF4:Yb3+,Er3+ is in hexagonal crystal system. The photoluminescence (PL) spectra of the functionalized NaYF4:Yb3+,Er3+@silica–N=FA nanophosphors were measured. These nanophosphors emit in red color with the strongest band at 650 nm under 980 nm excitation. This result can provide NaYF4:Er3+,Yb3+@silica-N=FA complex for developing fluorescence label and image tool in cancer biology and medicine.

A bisresorcinol, (8′Z)-3,5-dihydroxy-1-[16′-(3″,5″-dihydroxyphenyl)-8′-hexadecen-1′-yl]benzene (I), was isolated as an abundant constituent from the Vietnamese medicinal plant Heliciopsis terminalis (Kurz) Sleumer (Proteaceae). The antioxidant, hepatoprotective, and anti-inflammatory activities of compound I were tested in correlation with the use of H. terminalis as a hepatoprotective drug by ethnic people in Vietnam. Bisresorcinol I showed weak scavenging activity against DPPH radical at an EC50 value of 156.9 mg/mL. At a concentration of 100 mg/mL, compound I inhibited 19,78% of MDAproduction as one of the biomarkers for lipid peroxidation. Bisresorcinol I protected HepG2 cells against harmful CCl4. The hepatoprotective ability was observed at a concentration of 100 mg/mL with up to 44.42% cells alive, which was significantly higher than that in the control treated with CCl4 (29.93 %). The NO scavenging activity of I was determined in RAW 264.7 cells with an IC50 value of 71.15 mg/mL. Bisresorcinol I exhibited its anti-inflammatory activity through modulation of proinflammatory cytokines IL-6 and TNF-α as well as anti-inflammatory IL-10 in RAW264.7 cells.

A phytochemical investigation of Physalis minima led to the isolation of six withanolides, including withanolide E (1), withaperuvin C (2), 4β-hydroxywithanolide E (3), 28-hydroxywithaperuvin C (4), physaperuvin G (5), and 4-deoxywithaperuvin (6). Their chemical structures were elucidated by 1 D-NMR and 2 D-NMR data, as well as comparison with the data reported in the literature. All isolated compounds were evaluated for their cytotoxic activity against HepG2, SK-LU-1, and MCF7 cancer cell lines. As the obtained results, compounds 1 and 3 displayed the strongest cytotoxicity against HepG2, SK-LU-1, and MCF7 cell lines with IC50 value ranging from 0.051 ± 0.004 to 0.86 ± 0.09 μg/mL.

Phytochemical investigation of the whole plant of Scutellaria barbata resulted in the isolation of three new neo-clerodane diterpenoids, named scutebarbatolides A-C (1–3), along with six known analogues as 14-deoxy-11,12-didehydroandrographolide (4), scutehenanine H (5), 14β-hydroxyscutolide K (6), scutebata O (7), scutebartines H (8) and I (9). Their structures were elucidated by spectroscopic analyses, including 1D and 2D NMR and mass spectra in comparison with the data reported in the literature. Cytotoxicity of the isolates was evaluated toward five human cancer cell lines, including LNCaP, HepG2, KB, MCF7, and SK-Mel2 cells. Of the isolates, compounds 1 and 6 were shown to have moderate cytotoxicity toward all the cancer cell lines, with IC50 values ranging from 30.8 to 51.1 μM. Our results contribute to more insightful clarification of the use of S. barbata in the prevention and treatment of cancer.

The present study was conducted to examine the distributional characteristics of floral communities along the altitudinal gradients in Hoang Lien National Park (HLNP), located in Lao Cai province, Vietnam. We recorded the relatively abundant flora system with 3252 species (including 361 endemic species and 237 endangered species), belonging to 1126 genera, 230 families and 6 different phyla. Methodology of sampling, specimen collection and identification, statistical analysis are simultaneously used for investigating the complex changes of composition and richness of plant assemblages. The study results indicated the divisions in quantity and composition, especially differentiation of endemic and rare species in accordance with altitudinal gradients.

Anacardic acid (AA) is a natural active ingredient that accounts for 65% of the liquid extract from the shell of the cashew nut. Due to the stronger cytotoxic activity of hydrogenated AA (HAA) against NTERA-2 cancer stem cells (CSCs) than AA itself, HAA was co-conjugated with CD133 monoclonal antibody (mAb^CD133) into nanoliposomal particles (AMC). This nanoliposomal complex is expected to improved HAA activities against CSCs based on the targeting capacity of mAb^CD133 toward CD133, a typical CSCs’ surface marker. AMC was manufactured with a mean size of 100.9 nm, a zeta potential of −40.7 mV, and a PDI of 0.283. We report a 100% encapsulation efficiency of HAA into liposomes and a 90.7% conjugation efficiency with mAb^CD133. The penetration of AMC into NTERA-2 CSCs after 2 h was 83.7%. The AMC complex inhibited NTERA-2 growth with an IC50 (inhibition concentration at 50%) value of 75.83 ± 6.70 µM, showing the targeting ability and lower toxicity (IC50 > 100 µM) on healthy cells. The AMC nanoparticles also demonstrated significant potential apoptotic induction by activating caspase 3 activity by up to 2.57 and 2.06 folds compared to that of the negative control at 20 and 4 µM, respectively. This induction was significant improvement in comparison with that of unconjugated HAA ( P 50 = 64.25 ± 3.15 µM, compared to the free form with an IC50 = 82.22 ± 0.65 µM ( P

Degalactotigonin (1) and three other steroidal compounds solasodine (2), O-acetyl solasodine (3), and soladulcoside A (4) were isolated from the methanolic extract of Solanum nigrum, and their chemical structures were elucidated by spectroscopic analyses. The isolated compounds were evaluated for cytotoxic activity against human pancreatic cancer cell lines (PANC1 and MIA-PaCa2) and lung cancer cell lines (A549, NCI-H1975, and NCI-H1299). Only degalactotigonin (1) showed potent cytotoxicity against these cancer cell lines. Compound 1 induced apoptosis in PANC1 and A549 cells. Further study on its mechanism of action in PANC1 cells demonstrated that 1 significantly inhibited EGF-induced proliferation and migration in a concentration-dependent manner. Treatment of PANC1 cells with degalactotigonin induced cell cycle arrest at G0/G1 phase. Compound 1 induced downregulation of cyclin D1 and upregulation of p21 in a time- and concentration-dependent manner and inhibited EGF-induced phosphorylation of EGFR, as well as activation of EGFR downstream signaling molecules such as Akt and ERK.

Three sesquiterpene lactones (

We report on the synthesis and characterization of folic acid-conjugated silica-modified TbPO4·H2O nanorods for biomedical applications. The uniform shape TbPO4·H2O nanorods with a hexagonal phase were successfully synthesized by wet chemical methods. A novel TbPO4·H2O@silica-NH2 nanocomplex was then formed by functionalizing these nanorods with silica and conjugating with biological agents. The field emission scanning electron microscopy, energy-dispersive X-ray, and X-ray diffraction reveal the morphology and structure of the nanorods, with their controllable sizes (500-800 nm in length and 50-80 nm in diameter). The Fourier transform infrared spectroscopy was employed to identify chemical substances or functional groups of the TbPO4·H2O@silica-NH2 nanocomplex. The photoluminescence spectra show the four emission lines of TbPO4·H2O@silica-NH2 in folic acid at 488, 540, 585, and 621 nm under 355 nm laser excitation, which could be attributed to the 5D4-7 F j ( J = 6 , 5 , 4 , 3 ) transitions of Tb3+. The TbPO4·H2O@silica-NH2 nanorods were conjugated with folic acid for the detection of MCF7 breast cancer cells. The obtained results show a promising possibility for the recognition of living cells that is of crucial importance in biolabeling.

Using various column chromatographic methods, 5 triterpene tetraglycosides (1−5), including one new compound, namely holothurin A6 (1), were obtained from the water soluble part of the methanol extract of the sea cucumber Stichopus herrmanni. Their structures were confirmed by careful analysis of the 1D and 2D NMR, and HR ESI QTOF mass spectra. Noteworthily, 24-dehydroechinoside A (3) showed potent cytotoxicity to 5 human cancer cell lines {HepG2 (hepatoma cancer), KB (epidermoid carcinoma), LNCaP (prostate cancer), MCF7 (breast cancer), and SK-Mel2 (melanoma)} with IC50 values ranging from 0.19 ± 0.03 to 1.17 ± 0.18 µM.

A new sterol (1) and 8 known (2-9) compounds were isolated from the methanol extract of the Vietnamese marine sponge Halichondria panicea (Pallas, 1766) by various chromatographic methods. Their chemical structures were determined as 5 α,6 α-epoxy-(22 E)-ergosta-3 β,7 α-diol-8,22,25-triene (1), (22 E)-ergosta-7,22,25-triene-3 β,5 α,6 β-triol (2), 3 β-hydroxycholest-5ene-7-one (3), cholesterol sulfate (4), 3-formamidotheonellin (5), para-hydroxybenzylideneacetone (6), indole-3-carbaldehyde (7), thymidine (8), and adenosine (9) by using a combination of HR-ESI-MS, 1D and 2D NMR spectral data, as well as by comparison with the previous literature. This is the first report of these compounds from H panicea. Compounds 1 and 2 exhibited cytotoxic effects on Hep-G2, SK-Mel-2, LU-1, and MCF-7 cell lines with IC50 values of 9.27 ± 1.25, 11.34 ± 1.18, 15.45 ± 1.47, and 10.85 ± 1.19 µM (for 1), and 6.45 ± 0.77, 9.74 ± 1.03, 7.08 ± 0.64, 5.61 ± 0.39 µM (for 2), compared to the positive control compound, ellipticine, 1.60 ± 0.37, 2.53 ± 0.51, 1.82 ± 0.20, and 2.17 ± 0.66 µM, respectively.

Germinated brown rice (GBR) consists of bioactive compounds (BCs) that are very useful for diabetes treatment. Modified GBR-based flour (MGBRF) was produced by modifying the starch in GBR with 0, 299.19, 598.38, and 897.57 U/ml of cyclodextrin glycosyltransferase (CGTase) for 1 hr and then spray-dried to examine its antidiabetic and cytotoxic effects. The results showed that the slowly digestible starch and resistant starch by modifying the starch in GBR with 598.38 U/ml of CGTase were 55.8% and 5.92% corresponding to the increase of γ-amino butyric acid (GABA) and ferulic acid (FA) with 4.31 ± 0.68 mg/ml and 3.10 ± 0.02 mg/ml, respectively. The extract from MGBRF showed strong cytotoxic capacity against HepG2. Furthermore, the in vivo study revealed the stability of the glycemic index (GI) by consuming MGBRF with significant impacts on diabetes. These results suggest that MGBRF through the action of CGTase plays a major role in antidiabetes and HepG2 cell product value addition. PRACTICAL APPLICATIONS: GBR consists of BCs that are useful for diabetes and cancer treatment. However, when using this or GBR-based products, it is difficult to evaluate the effect of functional properties, especially for diabetes and/or cancer diseases due to high starch content. Therefore, the modification of starch to limit digestible starch, increase SDS and RS as well as to enhance the effect of BCs on diabetes and cytotoxic activity on cancer cell should be studied before producing various based products from GBR. The results in this study indicated that CGTase increased BCs without any glycosides BCs in the extract. The MGBRF changed to higher RS and SDS while increasing the BCs. The extract of MGBRF showed strong cytotoxic activity against HepG2 cell and a positive effect on type 2-diabetic mice. Hence, this study produces new information for effective use of GBR-based food as a functional food.

A new polyhydroxysteroid glycoside, regulusoside D (

Using various chromatographic separations, four steroids including one new C20 steroid namely dendrodoristerol (1), were isolated from the Vietnamese nudibranch mollusk Dendrodoris fumata. The structure elucidation was confirmed by combination of spectroscopic experiments including 1D and 2D NMR, HR QTOF MS, and CD. Compound 1 was found to exhibit significant in vitro cytotoxic activity against six human cancer cell lines as HL-60, KB, LU-1, MCF-7, LNCaP, and HepG2. In addition, 1 induced HL-60 cancer cell death by apoptosis and necrosis.

Using various chromatographic separations, seventeen steroids including seven new compounds, verrucorosteroids A–F (1–6) and verrucorosterone (7), were isolated from the Vietnamese gorgonian Verrucella corona. Their structures were elucidated by spectroscopic analysis, including HR QTOF MS, 1D and 2D NMR. Among isolates, verrucorosterone (7), 5,6α-epoxy-3β-hydroxy-(22E)-ergosta-8,22-dien-7-one (14), and 5,6α-epoxy-3β-hydroxy-(22E)-ergosta-8(14),22-dien-7-one (15) showed significant cytotoxicity (IC50 values ranging from 12.32 ± 1.47 to 33.77 ± 1.28 μM) against eight human cancer cell lines as LNCaP (prostate cancer), HepG2 (hepatoma cancer), KB (epidermoid carcinoma), MCF-7 (breast cancer), SK-Mel2 (melanoma), HL-60 (acute leukemia), LU-1 (lung cancer), and SW480 (colon adenocarcinoma).

A comprehensive phytochemical investigation of the dichloromethane-soluble fraction of Physalis angulata led to the isolation of eight compounds (1–8) including two new withanolides named physagulin P and Q (compounds 5 and 8). Their chemical structures were established using two-dimensional nuclear magnetic resonance (spectroscopy. The cytotoxic activity of these metabolites was investigated against A549, HeLa, and PANC-1 cancer cell lines. Among them, compound 1 showed significant cytotoxic activity against A549 cells with a half-maximal inhibitory concentration (IC50) value of 8.27 μM, while compound 7 showed the most potent activity against PANC-1 cells with an IC50 value of 3.18 μM.

This article aims to help people in traffic to implement good road traffic safety law, cultural behavior when participating in traffic and bring safety and happiness for themselves and their families. This article aims to assess the current status of community-based road safety law education for secondary school students in Tuy Hoa City, Phu Yen Province, Vietnam. Research results show that the community-based awareness-raising activities on road traffic safety for students have been implemented, but there have not been many new, innovative and effective activities. Therefore, there is a need for breakthrough measures, with the linkage between families, schools and communities such as: (1) raising resources to ensure the education of the sense of compliance with road traffic law among secondary school students in Tuy Hoa City, Phu Yen Province based on the community; (2) developing a traffic safety propaganda campaign in association with the organization of the 'Youth Festival and Culture of Transportation' and organizing contests on the road traffic safety law; (3) promoting volunteerism and youth activities to ensure traffic order and safety, replicating models, works and jobs of students participating in ensuring traffic order and safety, and educating union members who violate traffic safety.

This paper aims to assess the current situation of cooperative skills education for 5-6 year-old children with autism spectrum disorders (ASD) through play activities at some kindergartens in Son Hoa district, Phu Yen province. Lessons can be learned for teachers in the process of cooperative skills development for autistic children in integrated kindergartens. The results of theoretical research and the situation indicate that 1) Understanding the thoughts, emotions and attitudes of others, knowing how to express their emotions, and behaving in accordance with certain circumstances and situations are the difficulties that closely attach to ASD children; 2) ASD children perform better when playing alone than when cooperating and sharing with other children; 3) Children need to be reminded and supported by adults when playing with a group; 4) Teachers adapt a variety of play activities for the best educational effectiveness; however, outdoor activities prove to be most effective; 5) Play activities in kindergarten plays a major role in the development of cooperative skills for children, so the development of co-operative skills for children through play activities should be quickly implemented; 6) Focus should be put on engaging children groups in inclusive classes to support the collaborative skills education for ASD children.

The research was accomplished with 40 teachers, who are teaching in inclusive kindergarten school in Hanoi in order to evaluate the reality of the degree of utilization and the effectiveness of vocabulary development of children 3 – 4 years old with autism spectrum disorders, which was conducted by teachers then propose some possible measures based on that. The result indicates that the teachers lack of flexibility in the use of the measures, particularly the coordination of measures; the measures have not focused on the vocabulary development but more about perception. From the reality, the research proposes seven measures of vocabulary development of children 3 – 4 years old with autism spectrum disorders focusing on games, providing meaningful situations, enhancing communication through the pictures, encouraging the interaction of children with their friends… Experimental result has shown that children make progress of vocabulary development in all the aspects (1) the ability to understand the meaning of words (2) the ability to apply the correct words into situations (3) the number of words which children can understand and speak. This demonstrates that the proposed measures have had a positive impact on the children.

According to many studies, Foreign Direct Investment (FDI) has had a positive effect on economic growth. Thomas et al. (2008) discussed that multinational companies are more successful in developing new products and technologies than local companies, thus exerting competitive pressure on firms in some countries to compete and innovate. This has prompted developing countries to look for ways to attract FDI. The most developed economy faces the issue of investment- savings and FDI promotes growth by offsetting this gap by increasing productivity, technology transfer and increased competition (Kobrin, 2005). Given the practical benefits and expected benefits of FDI, many researches have been conducted to study the impact of FDI on economic growth. However, the results have been found mixed regarding the impact of FDI on economic growth in developed countries. In the theory of economic growth, the factor is always mentioned. When an economy wants to grow faster, it needs more capital. If domestic capital is not enough, this economy will want to have capital outside the country, including FDI. One of the purposes of FDI is to exploit conditions to achieve low production costs, foreign-invested enterprises will employ many local workers. The income of an improved part of the population will contribute positively to local economic growth. During the hiring process, vocational skills training, which in many cases is new and progressive in developing countries that attract FDI, will be provided by enterprises. This creates a skilled workforce for FDI-attracting countries. Not only regular workers but also local professionals have the opportunity to work and professional training in foreign-invested enterprises. At the same time, FDI stimulates the domestic economy to join the global production network. When attracting FDI from multinational companies, not only the multinational company’s investment capital, but also other domestic enterprises that have business relationships with that enterprise will participate too, which is regional division of labor. Therefore, the host country will have the opportunity to join the entire production network which is conducive to boosting exports. FDI provides much-needed resources for developing countries such as capital, technology, management skills, entrepreneurship, branding and market access. These are essential for the industrialization and modernization of the country, to develop and create more jobs, and to contribute to poverty reduction and improve the economic situation in developing countries, such as in Vietnam. As a result, most developing countries recognize the potential value of FDI and liberalize their investment regimes. Like other developing countries, Vietnam also opens the door to FDI into the country with the expectation of great benefits. After 30 years of renovation and opening up integration, despite many difficulties, Vietnam has achieved many advancements in the process of economic growth, increasingly bringing Vietnam out to the international arena. Var Analysis

Fourteen polyhydroxylated steroids including six new compounds, ehrensteroids A − F (1–6), were isolated from the Vietnamese soft coral Sarcophyton ehrenbergi after applying various chromatographic separations. The structure elucidation was done by detailed analysis of 1D, 2D NMR and HR QTOF mass spectra. In addition, significant cytotoxicity (IC50 values ranging from 8.45 ± 0.56 to 38.27 ± 2.39 μM) against all five tested cancer cell lines as LU-1 (lung cancer), HepG2 (hepatoma cancer), MCF-7 (breast cancer), HL-60 (acute leukemia), and SW480 (colon adenocarcinoma) was observed for compounds 1, 2, 6–10, and 12–14, whereas this activity on LU-1 (IC50 = 21.91 ± 2.72 μM) and HepG2 (IC50 = 20.32 ± 0.03 μM) cell lines was also observed for 4.

In this study, we aimed at evaluating in vitro and in vivo anti-inflammatory activity of various extracts of the rhizomes of Globba pendula Roxb. Three extracts ( n-hexane, ethyl acetate, and water) were screened for their inhibitory effect on NO production by lipopolysaccharide-stimulated RAW 264.7 macrophages. The ethyl acetate extract of G. pendula rhizomes (EGP) showed a potential effect with an IC50 value of 32.45 µg/mL. For in vivo study, the ethyl acetate extract was further investigated for its anti-inflammatory effect using collagen antibody-induced arthritic mice (CAIA). The level of arthritis in experimental mice significantly reduced ( P